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Stereo-microscope
The stereo, stereoscopic or dissecting microscope is an optical microscope variant designed for low magnification observation of a sample, typically using light reflected from the surface of an object rather than transmitted through it. The instrument uses two separate optical paths with two objectives and eyepieces to provide slightly different viewing angles to the left and right eyes. This arrangement produces a three-dimensional visualization of the sample being examined."Introduction to Stereomicroscopy" by Paul E. Nothnagle, William Chambers, and Michael W. Davidson, '' Microsc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optical Stereo Microscope Nikon Smz10
Optics is the branch of physics that studies the behaviour and properties of light, including its interactions with matter and the construction of instruments that use or detect it. Optics usually describes the behaviour of visible, ultraviolet, and infrared light. Because light is an electromagnetic wave, other forms of electromagnetic radiation such as X-rays, microwaves, and radio waves exhibit similar properties. Most optical phenomena can be accounted for by using the classical electromagnetic description of light. Complete electromagnetic descriptions of light are, however, often difficult to apply in practice. Practical optics is usually done using simplified models. The most common of these, geometric optics, treats light as a collection of rays that travel in straight lines and bend when they pass through or reflect from surfaces. Physical optics is a more comprehensive model of light, which includes wave effects such as diffraction and interference that cann ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inspection
An inspection is, most generally, an organized examination or formal evaluation exercise. In engineering activities inspection involves the measurements, tests, and gauges applied to certain characteristics in regard to an object or activity. The results are usually compared to specified requirements and standards for determining whether the item or activity is in line with these targets, often with a Standard Inspection Procedure in place to ensure consistent checking. Inspections are usually non-destructive. Inspections may be a visual inspection or involve sensing technologies such as ultrasonic testing, accomplished with a direct physical presence or remotely such as a remote visual inspection, and manually or automatically such as an automated optical inspection. Non-contact optical measurement and photogrammetry have become common NDT methods for inspection of manufactured components and design optimisation. A 2007 Scottish Government review of scrutiny of publi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laurent Chabry
Laurent Chabry was a French biologist. He was born in 1855 in the small city of Roanne, Loire, and died on November 23, 1894, in the city of Riorges. He obtained a PhD of medicine in 1881 and a PhD of science in 1887. He was then director of the laboratory of Concarneau, and finished his career in Lyon as assistant professor in the Faculty of Science. He mainly worked in the flying mechanisms of birds and insects, and demonstrated the mechanism of "double equilibrium" in Coleoptera. He also worked on tuberculosis and embryology Embryology (from Greek ἔμβρυον, ''embryon'', "the unborn, embryo"; and -λογία, ''-logia'') is the branch of animal biology that studies the prenatal development of gametes (sex cells), fertilization, and development of embryos .... References * * :fr:Laurent Chabry pdf-version {{DEFAULTSORT:Chabry, Laurent 1855 births 1894 deaths People from Roanne French biologists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pieter Harting
Pieter Harting (27 February 1812 – 3 December 1885) was a Dutch biologist and naturalist, born in Rotterdam. He made contributions in a number of scientific disciplines, and is remembered for his work in the fields of microscopy, hydrology, botany, and biostratigraphy. Career Medicine and teaching In 1835 he obtained his medical degree from the University of Utrecht and spent the following years as a doctor in Oudewater. From 1841 he taught classes in medicine at the Athenaeum of Franeker, and two years later returned to the University of Utrecht, where he worked until retirement in 1875. At Utrecht he was a full professor of pharmacology and plant physiology (from 1846), and later zoology (from 1855). In 1856 he was appointed director of the zoological museum. Microscope Throughout his career he maintained an avid interest in the historical development of the microscope and in the manufacture of lenses. He is credited with making design improvements to the microscop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chérubin D'Orléans
Chérubin d'Orléans (1613-1697) was a French scientific instrument maker. Biography A Capucin father and distinguished physicist, Chérubin d'Orléans (François Lasséré) devoted himself to the study of optics and to vision-related problems, which he discussed in ''La dioptrique oculaire and La vision parfaite'' (Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), ma ..., 1671 and 1677 respectively). He developed a binocular telescope and he devised and may also have built a special type of eyepiece that replaced the lens with a short tube. Chérubin is also credited with producing models of the eyeball for studying the lens function of the eye. He also invented the stereo microscope, also called the dissecting microscope. Works * References * Museo Galileo.Chérubin d'Or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georges Pouchet
Charles Henri Georges Pouchet (26 February 1833 – 29 March 1894) was a French naturalist and anatomist. Life He was born in Rouen, the son of naturalist Félix Archimède Pouchet (1800–1872). In 1865 he became chief of anatomical work at the Muséum national d'histoire naturelle in Paris, and was later co-director of the maritime laboratory at Concarneau. From 1879 to 1894 he was professor of comparative anatomy at the Muséum national d'histoire naturelle. In 1892 he was part of an early scientific polar expedition to Svalbard and Jan Mayen. Works Pouchet made contributions in several scientific fields, and specialised in comparative anatomy of fishes and whales. He was a prime advocate of polygenism, and was the author of an anthropological work titled ''De la Pluralité des races humaines'' (1858), which was translated into English as ''The Plurality of the Human Race'' in 1864 by the Anthropological Society. Selected writings * ''De la Pluralité des rac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muséum National D'histoire Naturelle
The French National Museum of Natural History, known in French as the ' (abbreviation MNHN), is the national natural history museum of France and a ' of higher education part of Sorbonne Universities. The main museum, with four galleries, is located in Paris, France, within the Jardin des Plantes on the left bank of the River Seine. It was formally founded in 1793 during the French Revolution, but was begun even earlier in 1635 as the royal garden of medicinal plants. The museum now has 14 sites throughout France. History 17th–18th century File:Jardin du roi 1636.png, The Royal Garden of Medicinal Plants in 1636 File:Buffon statue dsc00979.jpg, Statue of Georges-Louis Leclerc, Comte de Buffon in the formal garden File:Buffon, Georges Louis - Leclerc, comte de – Histoire naturelle, générale et particuliére, 1763 – BEIC 8822844.jpg, Buffon's "Natural History" (1763) File:MNHN-logo.jpg, The museum's seal, designed in 1793, illustrates the three realms of Nature, Collect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horatio Greenough
Horatio Greenough (September 6, 1805 – December 18, 1852) was an American sculptor best known for his United States government commissions '' The Rescue'' (1837–50), ''George Washington'' (1840), and '' The Discovery of America'' (1840–43). Biography The son of Elizabeth (''née'' Bender) and David Greenough, he was born in Boston on September 6, 1805, into a home with ethics for honesty and emphasis on good education. Horatio showed an early interest in artistic and mechanical hobbies. Particularly attracted to chalk, around the age of 12 he made a chalk statue of William Penn, known as his earliest work of record. Horatio also experimented with clay, which medium he learned from Solomon Willard. He also learned how to carve with marble under instruction from Alpheus Cary. Horatio seemed to have a natural talent for art, yet his father wasn't fond of the idea of this as a career for Horatio. ] In 1814 Horatio Greenough enrolled at Phillips Academy, Andover, and in 18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1896 Greenough-type Stereo Microscope By Carl Zeiss Jena (6892932332)
Events January–March * January 2 – The Jameson Raid comes to an end, as Jameson surrenders to the Boers. * January 4 – Utah is admitted as the 45th U.S. state. * January 5 – An Austrian newspaper reports that Wilhelm Röntgen has discovered a type of radiation (later known as X-rays). * January 6 – Cecil Rhodes is forced to resign as Prime Minister of the Cape of Good Hope, for his involvement in the Jameson Raid. * January 7 – American culinary expert Fannie Farmer publishes her first cookbook. * January 12 – H. L. Smith takes the first X-ray photograph. * January 17 – Fourth Anglo-Ashanti War: British redcoats enter the Ashanti capital, Kumasi, and Asantehene Agyeman Prempeh I is deposed. * January 18 – The X-ray machine is exhibited for the first time. * January 28 – Walter Arnold, of East Peckham, Kent, England, is fined 1 shilling for speeding at (exceeding the contemporary speed limit of , the fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Zeiss AG
Carl Zeiss AG (), branded as ZEISS, is a German manufacturer of optical systems and optoelectronics, founded in Jena, Germany in 1846 by optician Carl Zeiss. Together with Ernst Abbe (joined 1866) and Otto Schott (joined 1884) he laid the foundation for today's multi-national company. The current company emerged from a reunification of Carl Zeiss companies in East and West Germany with a consolidation phase in the 1990s. ZEISS is active in four business segments with approximately equal revenue (Industrial Quality and Research, Medical Technology, Consumer Markets and Semiconductor Manufacturing Technology) in almost 50 countries, has 30 production sites and around 25 development sites worldwide. Carl Zeiss AG is the holding of all subsidiaries within Zeiss Group, of which Carl Zeiss Meditec AG is the only one that is traded at the stock market. Carl Zeiss AG is owned by the foundation Carl-Zeiss-Stiftung. The Zeiss Group has its headquarters in southern Germany, in the sma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Binoviewer
A binoviewer is an optical device designed to enable binocular viewing through a single objective. In contrast to binoculars, it allows partially stereoscopic viewing and partially monoculair viewing, this because the eyes and brain still process the image binocularly, as both images are produced by the same objective and do not differ except for aberrations induced by the binoviewer itself. A binoviewer consists of a beam splitter which splits the image provided by the objective into two identical (but fainter) copies, and a system of prisms or mirrors that relay the images to a pair of identical eyepieces. Binoviewers are a standard component of laboratory microscopes and are also used with optical telescope An optical telescope is a telescope that gathers and focuses light mainly from the visible part of the electromagnetic spectrum, to create a magnified image for direct visual inspection, to make a photograph, or to collect data through elect ...s, particular ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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